2871994 has 4 divisors (see below), whose sum is σ = 4307994. Its totient is φ = 1435996.

The previous prime is 2871991. The next prime is 2872003. The reversal of 2871994 is 4991782.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2442969 + 429025 = 1563^2 + 655^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2871991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 717997 + ... + 718000.

2^2871994 is an apocalyptic number.

2871994 is a deficient number, since it is larger than the sum of its proper divisors (1436000).

2871994 is a wasteful number, since it uses less digits than its factorization.

2871994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435999.

The product of its digits is 36288, while the sum is 40.

The square root of 2871994 is about 1694.6958429170. The cubic root of 2871994 is about 142.1437742374.

The spelling of 2871994 in words is "two million, eight hundred seventy-one thousand, nine hundred ninety-four".